Moulding composition for producing microporous battery separators

Microporous battery separators with an average pore size below 0.05 mu m and with satisfactory high physical/mechanical properties are produced from moulding compositions comprising 5 to 60% by weight of a polyolefin, from 10 to 60% by weight of finely divided silica, from 10 to 75% by weight of pla...

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Bibliographische Detailangaben
Hauptverfasser:	STEFKA KIRILOVA FILIPOVA, EVGENI BOGDANOV BUDEVSKI, LYUBE KRESTANOV YANKOV, IVO YORDANOV ZLATANOV
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ELECTRICITY METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	Microporous battery separators with an average pore size below 0.05 mu m and with satisfactory high physical/mechanical properties are produced from moulding compositions comprising 5 to 60% by weight of a polyolefin, from 10 to 60% by weight of finely divided silica, from 10 to 75% by weight of plasticiser and from 0.2 to 20% by weight of an ethoxysiloxane. The separators are rendered microporous by extracting the plasticiser with a suitable solvent.